Shared image generation apparatus and method, computer program, and computer readable storage medium
US6975760B2 · kind B2 · utility
2Cited by
5References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2001 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Apr 10, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/085
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A shared image generation apparatus generates a basis matrix on the basis of a graph, the vertex set of which corresponds to a set of a plurality of members to which shared images are to be distributed, and generates a plurality of shared images to be distributed to the plurality of members on the basis of the basis matrix and an externally input secret image to be shared. The plurality of generated shared images form the secret image when they are stacked up.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.